Publications by authors named "Hui Hui Ma"

Article Synopsis
  • B cell linker protein (BLNK) is essential for signaling in B cells, but its role in macrophages during C-type lectin receptor (CLR) signaling is not well understood.
  • The study reveals that CLRs activate BLNK, which hinders macrophage migration by disrupting podosome ring formation in response to fungal components.
  • BLNK deficiency leads to increased macrophage migration and enhanced resistance to fungal infections by promoting the recruitment of specific macrophages to affected tissues.
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Aim: To explore the levels of neutrophil extracellular traps (NETs) in patients with periodontitis and examine their effects on keratinization, barrier function of human gingival keratinocytes (HGKs) and the associated mechanisms.

Materials And Methods: Saliva, gingival crevicular fluid (GCF), clinical periodontal parameters and gingival specimens were collected from 10 healthy control subjects and 10 patients with stage II-IV periodontitis to measure the NET levels. Subsequently, mRNA and protein levels of keratinization and barrier indicators, as well as intracellular calcium and epithelial barrier permeability, were analysed in HGKs after NET stimulation.

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Crohn's disease (CD) is a complex autoimmune disorder presumed to be driven by complex interactions of genetic, immune, microbial and even environmental factors. Intrinsic molecular mechanisms in CD, however, remain poorly understood. The identification of novel biomarkers in CD cases based on larger samples through machine learning approaches may inform the diagnosis and treatment of diseases.

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Cryptococcosis is a potentially lethal disease that is primarily caused by the fungus Cryptococcus neoformans, treatment options for cryptococcosis are limited. Here, we show glucuronoxylomannan, the major polysaccharide component of C. neoformans, induces the recruitment of neutrophilic myeloid-derived suppressor cells in mice and patients with cryptococcosis.

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Ulcerative colitis (UC) is a chronic, complicated, inflammatory disease with an increasing incidence and prevalence worldwide. However, the intrinsic molecular mechanisms underlying the pathogenesis of UC have not yet been fully elucidated. All UC datasets published in the GEO database were analyzed and summarized.

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Intestinal fungi are critical for modulating host immune homeostasis and underlying mechanisms remain unclear. We show that dendritic cell (DC)-specific deficiency of casitas B-lineage lymphoma (c-Cbl) renders mice susceptible to dextran sodium sulfate (DSS)-induced colitis. Mechanistically, we identify that c-Cbl functions downstream of Dectin-2 and Dectin-3 to mediate the ubiquitination and degradation of noncanonical nuclear factor κB subunit RelB.

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Background: Thyroid dysfunction in patients with morbid obesity usually resolves after bariatric surgery. However, the role of diverse types of adipose tissue in the process remains unknown.

Objectives: We aim to investigate the effects of visceral and subcutaneous fat on thyroid function in a Chinese population with morbid obesity who underwent sleeve gastrectomy (SG).

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The morphological switch between yeast and hyphae of Candida albicans is essential for its interaction with the host defense system. However, the lack of understanding of host-pathogen interactions during C. albicans infection greatly hampers the development of effective immunotherapies.

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Background: Macrophage activation syndrome (MAS) is a major cause of morbidity and mortality in pediatric rheumatology. We aimed to further understand the clinical features, treatment, and outcome of MAS in China.

Methods: A multi-center cohort study was performed in seven hospitals in China from 2012 to 2018.

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Article Synopsis
  • Juvenile idiopathic arthritis (JIA) is a common childhood disease linked to T-cell activation, with Th17 and Treg cells playing crucial roles in its development.
  • This study examined the levels of microRNA-125b (miR-125b) in children with JIA and its impact on the balance between Th17 and Treg cells, finding a negative correlation between low miR-125b levels and Th17/Treg imbalance.
  • Results showed that increasing miR-125b levels inhibited Th17 cell differentiation while promoting Treg cell differentiation, suggesting that miR-125b could be a potential therapeutic target for managing JIA.
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Exponential survival curves of early-passage human fibroblasts challenge classic biophysical models of cell inactivation. Thus, X-ray doses of 2-4 Gy inactivate normal, human skin fibroblasts in spite of negligible residual double-strand breaks. By contrast, radioresistant p53-mutant U251 glioblastoma cells proliferate in spite of residual damage.

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Objective: To detect the expression level of ICOS on Th9 cells in mice infected with , and investigate the relation between ICOS signaling and Th9 cell polarization.

Methods: Twenty-five mice with infection were used as models. IL-9cells in CD4 T cells and ICOS cells in Th9 cells of the mice were detected by flow cytometry 0, 4, 7, 9 weeks and 12 weeks after the infection.

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Inflammation plays an important role in nerve defects caused by intracerebral hemorrhage. Repairing brain damage by inhibiting the macrophage-inducible C-type lectin/spleen tyrosine kinase (Mincle/Syk) signaling pathway is a potential new target for treating cerebral hemorrhage. In this study, we aimed to determine whether acupuncture through Baihui (DU20) to Qubin (GB7) is an effective treatment for intracerebral hemorrhage through the Mincle/Syk signaling pathway.

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Objective: To observe the effect of penetrative needling of "Baihui" (GV 20) to "Qubin" (GB 7) on neurologic functions and expression of tumor necrosis factor (TNF)-α, interleukin (IL)-6 and toll-like receptor 4 (TLR-4, involving in inflammatory reactions) in the tissue around the local cerebral hematoma in rats with intracerebral hemorrhage (ICH), so as to provide evidence for clinical treatment of ICH.

Methods: Fifty-four male Wistar rats were randomly divided into sham control, mo-del and acupuncture groups, and then further divided into three time-point subgroups(1,3,7 days after modeling, =6/subgroup). The ICH model was established by injection of the rat's autoblood (50 μL) into the putaman region (P:0.

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Interleukin (IL)-17 producing T helper (Th17) cells are major effector cells in the pathogenesis of rheumatoid arthritis (RA). The P2X7 receptor (P2X7R) has emerged as a potential site in the regulation of inflammation in RA but little is known of its functional role on the differentiation of Th17 cells. This study investigates the in vitro and in vivo effects of P2X7R on Th17 cell differentiation during type II collagen (CII) induced experimental arthritis model.

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Juvenile idiopathic arthritis (JIA) is a common autoimmune disease characterized by environmental influences along with several predisposing genes in the pathogenesis. The protein tyrosine phosphatase nonreceptor 22 (PTPN22) and signal transducer and activator of transcription factor 4 (STAT4) have been recognized as susceptibility genes for numerous autoimmune diseases. Associations of STAT4 rs7574865 G/T and PTPN22 (rs2488457 G/C and rs2476601 C/T) polymorphisms with JIA have repeatedly been replicated in several Caucasian populations.

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Aim Of The Study: Results of recent published studies on the association between the COX-2 8473T>C polymorphism and the risk of breast cancer have often been conflicting. To make a more precise estimation of the potential relationship, a meta-analysis was performed.

Material And Methods: A total of seven case-control studies with 7,033 cases and 9,350 controls were included in the current meta-analysis through searching the databases of PubMed, Embase, and Cochrane Library (up to March 1(st), 2013).

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The aim of this study was to delineate the temporal and spatial sequence of STAT1 and STAT3 activation during development of GVHD following fully Major Histocompatibility Complex (MHC)-mismatched allogeneic Bone Marrow Transplantation (BMT). Activation of inflammatory signaling pathways in GVHD target organs was assessed by western blotting, phospho-flow cytometry and electromobility shift assays (EMSA). Development of GVHD was associated with significant expansion of phospho[p]-STAT1 and p-STAT3 expressing CD4(+) T cells and CD8(+) T cells.

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This study aims to investigate the prognostic factors and long-term treatment outcome in patients with early stage nasal natural killer (NK)/T-cell lymphoma. Sixty-four patients were recruited in this study, whose clinical and laboratory data were collected from hospital records. Early stage (stage IE: 51, stage IIE: 13) nasal NK/T-cell lymphoma (NNTCL) was established according to Ann Arbor staging classification.

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As it is impossible for an active catheter with a very small space to accommodate overmany lead wires in minimally-invasive surgery, a matrix network system is presented, in this paper, to control SMA actuators using minimum lead wires. Pulse current is adjusted by pulse width modulation (PWM) signals from the single-chip processor. In addition, multiple SMA actuators' cooperation helps the active catheter to succeed in guiding motion.

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Objectives: To define the expression of single-chain variable fragment (ScFv) against hepatitis B virus core protein (HBc) mediated by recombinant replication defective adenovirus carrying the anti-HBc ScFv gene in vitro and to define the activity of anti-HBc ScFv combining HBcAg.

Methods: The recombinant adenoviruses carrying anti-HBc ScFv gene generated by homologous recombination in bacteria and packaged in 293 cells were transfected into HepG2 cells, and the anti-HBc ScFv was detected using SDS-PAGE and Western blot.

Results: Green fluorescent protein (GFP) was observed in HepG2 cells after the transfection.

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Background: The influence of interleukin-10 (IL-10) gene promoter polymorphisms on the mode and sequel of HBeAg seroconversion (a favorable event usually) in patients with chronic Hepatitis B virus (HBV) infection has not been clarified.

Patients And Methods: IL-10 genotyping and haplotype analyses of 340 HBsAg carriers and 100 volunteers with self-limiting HBV infection from southern China, a high prevalent area of HBV were performed according to the single nucleotide polymorphisms in its promoter (-1,082, -819 and -592) using a competitively differentiated PCR.

Results: High-producer genotype (GG at -1,082) or haplotype (GCC) was rarely found in patients from southern China (<1%).

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Rapid, specific and sensitive methods without advanced equipment are required urgently in developing countries in order to detect or monitor lamivudine-resistant mutants routinely before or in the course of the therapy. A protocol is described for the detection of two major YMDD mutations simultaneously through modifying a previous competitively differentiated-PCR (CD-PCR) by revising the strategy, increasing the number of competitively differentiated primers, increasing the number of labeled haptens, optimizing the amplification system and analyzing its products by enzyme immunoassay. Special care was taken to promote the sensitivity, specificity and the ability of the protocol to detect mutation in mixture of the mutants and wild strain.

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